Free and open first
Best Feature Flag Software in 2026
Feature flag software helps development teams control which features are available to users and groups. Compare percentage rollouts, targeting rules and user segments to see how each option supports staged releases and access decisions. Environments and SDK languages can help you assess fit with your development setup, while approval workflows and audit logs offer details on oversight and change history. Free-plan availability and “Paid from” pricing add cost context. Flagsmith, ConfigCat and feat are among the entries to consider, along with Featureflow. Weigh the release controls and integrations against the way your team manages software changes.
- 27 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
Bucketeer
Free plan Open source AndroidAPIiPhone+3Bucketeer provides feature flags, rollout controls, experimentation, and governance for self-hosted deployments. Teams should note that its HTTP API is labeled Alpha and client SDKs evaluate remotely.
- 2
Featurevisor
Free plan Open source AndroidAPIiPhone+5Featurevisor offers a Git-centered workflow for feature management with local evaluation and testing.
- 3
Flagsmith
Free plan Open source AndroidAPIiPhone+5Flagsmith combines controlled rollouts with remote configuration and several deployment choices.
- 4
GrowthBook
Free plan Open source AndroidAPIExtension+3Choose GrowthBook for warehouse-based experimentation and feature management with a choice of cloud or self-hosted deployment.
- 5
Unleash
Free plan Open source AndroidAPIiPhone+5Unleash provides release controls, experiments, and integrations across a broad SDK list.
- 6
ConfigCat
Free plan AndroidAPIExtension+4ConfigCat offers feature management controls across a wide SDK range, with a free plan and several paid tiers.
- 7
DevCycle
Free plan AndroidAPIExtension+5DevCycle combines feature flag management, staged releases, and experimentation with broad SDK coverage. Compare the Free usage limits with Business allowances and overage charges before committing.
- 8
feat
Free plan AndroidAPIiPhone+1feat provides local server-side evaluation, targeting, and sticky rollouts with SDKs across several languages. Review plan limits and distinguish listed upcoming functions from current capabilities.
- 9
Featureflip
Free plan AndroidAPIiPhone+3Choose Featureflip if you need feature flags and experimentation for web or mobile, with a free plan for a single project.
- 10
Featureflow
Free plan AndroidAPIiPhone+1Featureflow combines targeting, staged rollouts and release pipelines for teams that want to control feature availability separately from deployment.
- 11
FeatureHub
Free plan AndroidAPIiPhone+2FeatureHub combines flag management, targeted rollouts, and SDK delivery with both hosted and self-hosted options. Include the separate API request charges when considering the SaaS plan.
- 12
FeatBit
Free plan APISelf-hostedWebFeatBit combines feature flags, experiments, and multiple deployment choices, including self-hosting. Teams should compare the Cloud MAU allowances and self-host plan costs with their requirements.
- 13
Flipt
Free plan APILinuxMac+3Flipt offers a free Git-oriented feature flag workflow and a paid Pro plan with additional integrations and secrets management.
- 14
GO Feature Flag
Free plan AndroidAPIiPhone+5 - 15
Harness Feature Management & Experimentation
Free plan AndroidAPIiPhone+5 - 16
LaunchDarkly Experimentation
Free plan AndroidAPIiPhone+1LaunchDarkly Experimentation offers varied experiment types, statistical methods, and warehouse connections.
- 17
FeatureProbe
Free plan AndroidAPIiPhone+2FeatureProbe combines feature controls, rollout management and analysis capabilities in an open-source service.
- 18
Rollgate
Free plan AndroidAPIiPhone+1Choose Rollgate if your team needs feature targeting, gradual rollouts, or fast configuration rollback across its listed SDKs.
- 19
Statsig
Free plan AndroidAPIExtension+3Statsig combines testing, release controls, and product analytics in one platform, with a free Developer plan and Pro at $150 a month.
- 20
Togglely
Free plan APISelf-hostedWebTogglely combines environment-specific flag values, audience targeting, and SDK or API evaluation.
- 21
TrustyGorilla
Free plan APISelf-hostedWebTrustyGorilla offers feature flags, targeting, experiments, and governance, with a free plan and paid usage beyond its included evaluation allowance.
- 22
- 23
Zenmanage
Free plan APIWebZenmanage combines targeting, gradual rollouts, runtime configuration, and scoped access controls. Its free plan and no-card trial offer two ways to evaluate it, while paid plans start at $29/mo.
- 24
Optimizely Feature Management
Free plan AndroidiPhoneWeb - 25
Split
Free plan AndroidiPhoneWeb
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price